Chmistâr weather in September

In September, Chmistâr sees average daytime highs of 26°C and overnight lows near 14°C, with 7 mm of rain across 2 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 25°C by the end. The sky is clear or mostly clear about 93% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Chmistâr's 4th-clearest and 9th-windiest month. For the whole year in context, see Chmistâr's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
7 mm
2 wet days
Daylight
12 h 12 min
5:24 AM – 5:36 PM
Cloud cover
12%
4th clearest
Wind
6 km/h
9th windiest
Solar energy
6.15 kWh/m²
Travel score
8.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 25°C by the end.

A typical September day in Chmistâr reaches about 26°C in the afternoon and slips back to 14°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, September runs about 2°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52715
62715
72715
82715
92715
102715
112714
122714
132714
142714
152614
162614
172614
182614
192614
202613
212613
222513
232513
242513
252513
262513
272513
282512
292412
302412

How September really feels in Chmistâr

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chmistâr weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°10212.67.4100.8
Feb / -1°9611.56.710.71.3
Mar11° / 8311.2411.72.9
Apr16° / 488.50.512.85.4
May21° / 317013.77.6
Jun25° / 14°51.5014.29.1
Jul28° / 16°20.50148.4
Aug29° / 16°30.7013.37.9
Sep26° / 14°72012.28.8
Oct22° / 10°296.5011.17.7
Nov15° / 537.70.610.25.1
Dec10° / 7910.83.79.82.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 93% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 2%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11000
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19982
20982
21982
22982
23982
24973
25964
26964
27964
28964
29964
30946

Chance of precipitation in September

Any precipitation

Chmistâr gets around 7 mm of rain over 2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 12% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
13
23
34
44
54
64
74
84
94
104
114
125
135
145
155
166
176
186
197
207
218
229
239
2410
2510
2611
2711
2811
2911
3012

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
177212
278202
379192
480182
582171
683161
784151
885141
986131
1087121
1187121
1289110
1390100
1490100
159190
169280
179280
189370
199370
209370
219460
229460
239550
249550
259640
269640
279730
289730
299820
309820

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 5:13 AM to 5:34 AM, and sunset from 5:58 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:135:58
212.75:145:57
312.75:155:55
412.65:165:54
512.65:165:52
612.65:175:51
712.55:185:49
812.55:185:48
912.55:195:47
1012.45:205:45
1112.45:205:44
1212.45:215:42
1312.35:225:41
1412.35:235:39
1512.25:235:38
1612.25:245:36
1712.25:255:35
1812.15:255:34
1912.15:265:32
2012.15:275:31
2112.05:285:29
2212.05:285:28
2312.05:295:26
2411.95:305:25
2511.95:305:23
2611.85:315:22
2711.85:325:21
2811.85:335:19
2911.75:335:18
3011.75:345:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.15 kWh/m².

For context, solar energy here swings from a low near 2.7 kWh/m² to a high of 8.14 kWh/m² in June across the year — September's 6.15 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.7Intense
56.7Intense
66.6Intense
76.6Intense
86.5Intense
96.5Intense
106.4Intense
116.4Intense
126.3Intense
136.3Intense
146.2Intense
156.2Intense
166.1Intense
176.1Intense
186.0Intense
196.0Bright
205.9Bright
215.9Bright
225.8Bright
235.8Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.4Bright
Planning a trip in September

Hazard calendar for Chmistâr

In seasonPeak

None of Chmistâr's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Chmistâr's rainy season runs November–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Chmistâr?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.8
Sightseeing
2nd-best month of the year
8.5
Beach & pool
3rd-best month of the year

September is one of the better times to visit Chmistâr for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chmistâr in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Chmistâr sees daytime highs around 26°C and nights near 14°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Chmistâr in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 40 km away) is warmest in August at about 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 3 to Dec 23 — about 7.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb17Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun25Warm
Jul27Warm
Aug28Tropical
Sep28Warm
Oct26Warm
Nov23Refreshing
Dec21Refreshing

UV index in Chmistâr in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chmistâr peaks around June 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 20UV 12Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May9Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Chmistâr in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Chmistâr is worst in November — around 58 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (July, 31 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModeratePoorUnhealthyNov 2258 µg/m³Jul 2231 µg/m³
PM2.5 (µg/m³)Level
Jan52Poor
Feb57Unhealthy
Mar52Poor
Apr54Poor
May44Poor
Jun35Poor
Jul31Moderate
Aug31Moderate
Sep41Poor
Oct51Poor
Nov58Unhealthy
Dec57Unhealthy
Location & terrain

Where is Chmistâr?

Chmistâr sits at 34.0°N, 36.0°E, 1,137 m above sea level, in Lebanon. The nearest listed city is Zahle, 17 km away.

ZahleBaalbekAz ZabadānīBsharriJouniehByblosAleyAarsâl

Topography around Chmistâr

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chmistâr.

Within 3 km, the terrain around Chmistâr has significant variations in elevation — a maximum elevation change of 575 m around an average of 1,198 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,731 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,079 m.

The land around Chmistâr is covered by grassland (61%) within 3 km, grassland (57%) and cropland (21%) within 16 km, and grassland (38%) and water (20%) within 80 km.

3 km
575 m
16 km
1,731 m
80 km
3,079 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Zahle 17 km · Baalbek 19 km · Az Zabadānī 28 km · Bsharri 32 km · Jounieh 37 km · Byblos 38 km · Aley 42 km · Aarsâl 44 km

Lebanon travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / B / C / D / G
220 V · 50 Hz
Prices
≈ 38% of US
price level, 2024
GDP per capita
$4,473
2024
Happiness
3.7 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
2.2
per 100k, 2020
Road deaths
16.4
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 477
Religion
Muslim 68%Christian 32%Druze 5%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chmistâr (33.9647°, 36.0175°, elevation 1,137 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).